Yes I have, in fact one such instance is a perfect example of Walmart fabric versus 'shop quality'.....
I didn't remember buying the shop quality fabric - got it at Fabric by the pound... got the wm stuff on the markdown from the quilt of the month..
exact same pattern, same colors, etc VASTLY different 'hand'... the wm stuff is stiff, cheap feeling, the other is really nice and the pattern is crisper, the wm is 'vague'..
you wouldn't notice except when they are side by side.
and makes me wonder why I got the wm stuff in the first place - the only thing I can figure is I got it at a bargain price with the intention of using it for a back or something...